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Cook told the Journal that Apple will make an early version of the software available to developers on Thursday, and will start selling it in late summer.
The Wall Street Journal previously reported that Microsoft also is planning price breaks for its Windows and Office software as part of a strategy to spur lower-cost touch-screen devices enabled by its Windows software.
And now anyone with a modem and a few dollars can become his own publisher by using simple software to create a blog -- a kind of diary of opinion or a running journal that also provides links to articles and other Web sites.